Proceedings of nanoGe Fall Meeting 2021 (NFM21)
DOI: https://doi.org/10.29363/nanoge.nfm.2021.180
Publication date: 23rd September 2021
Perovkites have been shown as potential candidates for next generation optoelectronic applications. Therefore, their basic crystallographic features need to be understood deeply. Ferroelastic twin domains are crystallography related structures that affect the charge carrier dynamics in methylammonium lead iodide (MAPI) crystals. They form in MAPI crystals due to its tetragonal crystal structure with low symmetry. In this presentation, the methods such as piezoresponse force microscopy (PFM), polarized optical microscopy (POM), and x-ray diffraction (XRD) to monitor the ferroelastic twin domains in MAPI and strain engineering procedures to change the domain will be discussed. In addition, characterization techniques like time-resolved photoluminescence (TRPL) and PL microscopy on twin domain effect on charge carrier diffusion will be presented.
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